Home / 1,121,145-1,547,212.90-611,880.04

Finding the Fourth Proportional to 1,121,145, 1,547,212.90 and 611,880.04

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Solution

The fourth proportional to 1,121,145, 1,547,212.90 and 611,880.04 is: 844,412.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,145 : 1,547,212.90 = 611,880.04 : x
  2. Step 2: Convert to fraction form
    1,121,145/1,547,212.90 = 611,880.04/x
  3. Step 3: Cross multiply
    1,121,145x = 1,547,212.90 × 611,880.04
  4. Step 4: Simplify right side
    1,121,145x = 946,708,691,140.52
  5. Step 5: Solve for x
    x = 946,708,691,140.52/1,121,145
  6. Step 6: Final answer
    x = 844,412.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.